Seed heatmaps

Each metric’s value density across all ~2.1 billion seeds. The horizontal axis is the seed, bucketed into 2,048 columns of 1,048,576 seeds each (aligned to 2²⁰ boundaries); the vertical axis is the metric’s value. A pixel’s shade is how many seeds fall on it — a per-seed mark is impossible at this scale. If the seed has no effect on a metric, every column looks alike; any column-to-column drift or banding is real seed-position structure.

Rasters are fetched on demand from the sage-charts-data CDN — only the selected metric’s grid (~1.3 MB) is downloaded.